Coral reefs endangered by bleaching in global event, researchers say

October 09, 2015 05:30

For the third time since records have been kept, the world is experiencing a global coral bleaching event.

It's a major environmental incident, predicted by the U.S. National Oceanic and Atmospheric Administration and now confirmed as underway by teams of scientists and reef mappers across the globe.

Coral bleaching is triggered by stresses on coral reefs. During bleaching, the coral expel the algae that live within them, exposing the coral's white skeleton. The symbiotic algae not only provide coral with its color, they also provide crucial nutrients. Without them, the coral eventually will starve.

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